bistort noun.
['bɪstɔ:t] E16.[French bistorte or medieval Latin bistorta, from bis twice + torta fem. pa. pple of torquere twist.]Any of certain polygonums with twisted roots;
spec. the species
Persicaria bistorta, which bears cylindrical spikes of pink flowers and has an astringent root.
[TahlilGaran] English Dictionary ▲